Existing Jenkins sites can no longer be synchronized or deleted after upgrading to version 2.3.4 of the add-on.
New sites added are not effected.
The root cause lies in the a bug in the way the cache is used to hold synchronization status of different Jenkins sites and jobs.
A workaround to this problem is to restart Jira, in case of a cluster it may require all nodes are restarted, to clear the cache. After the restart problems detailed above should be resolved.
In the mean time, priority has been given to
|Content by Label|